Haltech Elite 550 ECU + Premium universal wiring (2.5 meters)

Haltech Elite 550 ECU Overview

The Haltech Elite 550 is a simple yet powerful ECU, ideal for 4- to 8-cylinder or 1- to 2-rotor engine applications. It is suitable for both naturally aspirated and forced induction engines, offering complete control over fuel delivery, ignition timing, and boost pressure levels.

Main features:

• Support for engines from 1 to 8 cylinders or 1 to 2 rotors.
• Application for naturally aspirated or forced induction engines.
• Load sensing by:
  • Throttle Position Sensor (TPS),
  • Manifold absolute pressure (MAP)
  • Mass airflow (MAF).
• Injection patterns:
  • Sequential, semi-sequential, batch or multipoint.
• Ignition modes:
  • Multi-coil direct ignition, distributor ignition or Haltech CDI systems.
• Connecting to additional devices:
  • CAN connection for displays, dashes and expansion devices.
• Sealed and waterproof box (IP67), with USB cover included.
• 34-pin AMP connector.
• Entrances and exits:
  • 4 x Fuel injection outlets (peak and hold).
  • 4 x Ignition outputs.
  • 2 x Dedicated inputs for engine position.
  • 1 x Analog voltage input.
  • 3 x Dedicated inputs (Throttle Position, Coolant Temperature and Air Temperature).
• Internal 4 bar MAP sensor (measures up to 300 kPa / 3 bar / 45 psi boost pressure).
• Expansion of up to 33 input/output channels (via CAN).
• USB communication with laptop (Windows compatible).
• NSP calibration software for more intuitive control.

The Haltech Elite 550 is a versatile and robust ECU, perfect for high-performance vehicles requiring precise and reliable engine control, all in a compact and easy-to-use package.

Haltech Elite 550 ECU Features

The Haltech Elite 550 offers an advanced range of features for managing and tuning high-performance engines. The key ECU functions are detailed below:

Main functions:

• O2 Control - Closed Loop with Long-Term Learning:
  Allows for precise tuning of the air-fuel ratio (AFR). The optional external O2 CAN wide-probe controller kit improves tuning accuracy.

• Boost Control:
  Closed-loop learning with user-defined axes, featuring six fully adjustable modes, including boost pressure control per gear, road speed, and more.

• Flex Fuel Function (Direct Sensor Input):
  It allows you to adjust pressure boost, fuel mixture, and even ignition timing based on the ethanol content in the fuel, maximizing engine efficiency based on this parameter.

• Low impedance injector control:
  It offers control over programmable peak and hold currents, improving injector management in high-performance applications.

• Idle Speed Control:
  Closed loop to maintain a constant idle speed, requiring 1 or 2 user-defined outputs (BAC type).

• Data logging on board and on laptop:
  Allows you to record all available channels directly to your laptop's hard drive for real-time diagnostics and adjustments.

• CAN Bus Communication:
  Compatible with Haltech displays, expansion devices, or OBDII to display live engine data and manage diagnostic trouble codes.

• 2-stage injection for rotary engines:
  Ideal for rotary engine applications, providing precise injection control.

• Advanced features enabled at no additional charge:
  The ECU comes fully enabled, with no additional payments required for advanced features.

Advanced setting:

• Resolution of the adjustment table:
  Up to 32 x 16, allowing detailed and flexible adjustment.

• Unlimited flexibility in tuning:
  It allows you to tune your engine using a combination of 3D tuning tables, 3D cylinder offsets, and user-defined corrections, eliminating the need for dual mapping.

• Cylinder fit correction (3D):
  Allows you to make specific adjustments per cylinder with 3D resolution.

• O2 Broadband Connection:
  Up to 3 channels can be connected via CAN expansion devices for precise control of the air-fuel mixture.

• Thermocouple / EGT (Exhaust Gas Temperature) Connection:
  Connect up to 12 channels via CAN expansion devices to monitor exhaust gas temperature.

• Variable cam control:
  Independent control of up to 2 camshafts, with a minimum of 1 user-defined input and 1 output for each variable cam.

These advanced features allow the Haltech Elite 550 to offer precise, highly configurable control, ideal for modified engines or high-performance applications.

Haltech Universal Wiring Description

The Haltech Universal Wiring Harness is ideal for dedicated race cars, engine swaps, and custom wiring projects. This connection harness is designed to facilitate the integration of the Haltech ECU into modified vehicles and high-performance applications.

Main features:

• ECU connectors on one end:
  The wiring harness includes a set of ECU connectors on one end, ensuring an easy and secure connection to your Haltech ECU.

• Unterminated cables at the other end:
  On the opposite end, the wires are unterminated, allowing you to customize the connections to your motor's wiring diagram. All wires are color-coded and clearly labeled, making installation easier and minimizing errors.

• Detailed wiring diagram:
  The wiring includes a clear and detailed installation diagram, for a confusion-free construction process.

• Complete ECU Manual:
  The wiring diagram is accompanied by the complete Haltech ECU manual and software, which is located on the CD or USB flash drive provided with the ECU. This will allow you to reference the information while installing and configuring the ECU.

• Basemaps ready to load:
  Once the wiring and ECU are connected, you can load the base map and be ready to begin engine tuning.

This harness is a perfect solution for those looking for a clean, professional installation on race vehicles, with the flexibility to accommodate specific modifications.

Includes:

• Haltech Elite 550 ECU
  Robust and powerful ECU, ideal for 4-cylinder or 2-rotor engine applications, both naturally aspirated and forced induction.

• Premium Universal Wire-In Wiring Harness
  High-quality harness for easy system connection and customization, ideal for engine conversions and swaps.

• Firewall Grommet
  Grommet designed to pass cables through the firewall safely and without risk of damage.

• Haltech molded fuse box for 6 power circuits
  Fuse box specifically designed to safely handle high current connections.

• Fuse box cover
  Molded cover protects the fuse box, ensuring a clean and organized installation.

• 2 relays, 4 fuses and pins for the 4 additional power circuits
  Additional components for power circuits, providing expansion options for custom needs.

• Waterproof USB cap
  Protects the USB connection from water and dirt, maintaining system integrity.

• USB programming cable
  USB cable to connect the ECU to the computer and perform the necessary calibration and adjustments.